Acetic Anhydride → N-[2-(2,6-dioxo-piperidin-3-yl)-1-oxo-2,3-dihydro-1H-isoindol-5-ylmethyl]-acetamide

HRID 63431

Reaktionsgleichung

Reaktionsgleichung von HRID 63431
CS(O)(=O)=O.[NH2:6][CH2:7][C:8]1[CH:9]=[C:10]2[C:14](=[CH:15][CH:16]=1)[C:13](=[O:17])[N:12]([CH:18]1[CH2:23][CH2:22][C:21](=[O:24])[NH:20][C:19]1=[O:25])[CH2:11]2.[C:26](OC(=O)C)(=[O:28])[CH3:27].C(N(CC)CC)C>C(#N)C>[O:25]=[C:19]1[CH:18]([N:12]2[CH2:11][C:10]3[C:14](=[CH:15][CH:16]=[C:8]([CH2:7][NH:6][C:26](=[O:28])[CH3:27])[CH:9]=3)[C:13]2=[O:17])[CH2:23][CH2:22][C:21](=[O:24])[NH:20]1

Komponenten

5

Edukt 3

HCID 7918Acetic AnhydrideHCID 8471TriethylamineHCID 866307653-(5-(Aminomethyl)-1-oxoisoindolin-2-yl)piperidine-2,6-dione methanesulfonate

Produkt 1

HCID 44538209N-[2-(2,6-dioxo-piperidin-3-yl)-1-oxo-2,3-dihydro-1H-isoindol-5-ylmethyl]-acetamideAusbeute 75 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342AcetonitrileLösungsmittel

Versuchsvorschrift

To a stirred mixture of 3-(5-aminomethyl-1-oxo-1,3-dihydro-isoindol-2-yl)-piperidine-2,6-dione methane sulfonate (0.75 g, 2.0 mmol) and acetic anhydride (0.19 mL, 2.0 mmol) in acetonitrile (20 mL), was added triethylamine (0.56 mL, 4.0 mmol) at room temperature under nitrogen. After 1 h, the solids were isolated by filtration. The crude product was triturated in water (20 mL) for 1.0 h, then isolated by filtration and dried in vacuo to give N-[2-(2,6-dioxo-piperidin-3-yl)-1-oxo-2,3-dihydro-1H-isoindol-5-ylmethyl]-acetamide as a white solid (0.47 g, 75% yield): HPLC: Waters Symmetry C18, 5 μm, 3.9×150 mm, 1 mL/min, 240 nm, 10/90 to 90/10 CH3CN/0.1% H3PO4 gradient over 15 mins, 3.28 min (96.26%); mp: 183-185° C.; 1H NMR (DMSO-d6) δ 1.89 (s, 3H, CH3), 1.93-2.07 (m, 1H, CHH), 2.26-2.48 (m, 1H, CHH), 2.54-2.70 (m, 1H, CHH), 2.77-3.04 (m, 1H, CHH), 4.22-4.51 (m, 4H, CH2, CH2), 5.11 (dd, J=5.1, 13.2 Hz, 1H, CH), 7.39 (d, J=7.9 Hz, 1H, Ar), 7.47 (s, 1H, Ar), 7.68 (d, J=7.9 Hz, 1H, Ar), 8.45 (t, J=5.8 Hz, 1H, NH), 10.98 (s, 1H, NH); 13C NMR (DMSO-d6) δ 22.49, 22.56, 31.21, 42.14, 47.10, 51.59, 122.08, 122.90, 127.05, 130.32, 142.36, 143.95, 167.93, 169.25, 171.00, 172.86; LCMS: MH=316; Anal Calcd for C16H17N3O4: C, 60.94; H, 5.43; N, 13.33. Found: C, 60.61; H, 5.31; N, 13.30.

Aufarbeitung

  1. customthe solids were isolated by filtration
  2. customThe crude product was triturated in water (20 mL) for 1.0 h
  3. customisolated by filtration
  4. customdried in vacuo

Quellen und Nachweise

ORD-Eintrag
ord-c16728ed464842429b9184610b4070ba
Quelldatensatz
uspto-grants-2016_09
Patentnummer
US09447070B2

Verknüpfte Notizen

Wird geladen…